如何在php中创建具有嵌套对象和数组的JSON对象

这就是我希望对象的外观：

{
    "cluster": "testcluster",
    "instance": "i-03f8f8c9e7febab21",
    "instype": "r4.8xlarge",
    "AZ": "us-east-1e",
    "env": "test", 
    "cpus":  "32",
    "memory": "256G",
    "kernel": "4.4.0-96-generic",
    "info": "cpu usage stats",
    "unit": "percent",
    "cpustats": [
          {"metric":"user", "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]},
          {"metric":"sys",  "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]},
          {"metric":"idle", "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]},
          {"metric":"softirq", "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]},
          {"metric":"intr", "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]},
          {"metric":"steal", "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]},
          {"metric":"user", "values":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]}
   ]
}

{
    "cluster": "testcluster",
    "instance": "i-03f8f8c9e7febab21",
    "instype": "r4.8xlarge",
    "AZ": "us-east-1e",
    "env": "test", 
    "cpus":  "32",
    "memory": "256G",
    "kernel": "4.4.0-96-generic",
    "info": "cpu usage stats",
    "unit": "percent",
    "cpustats": {
          "user":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891],
          "sys":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891],
          "idle":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891],
          "softirq":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891],
          "intr":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891],
          "steal":[1874,1857,1884,1869,1909,1912,1901,1880,1883,1889,1891]
    }
}

---

如何在php中构建？

对不起，这个问题解释得很糟糕！！如果我理解的话，你想要一个类似上面的JSON（你的帖子）

PHP有一个特殊的函数来管理JSON对象：JSON_编码和JSON_解码

---

使用json_编码 它用于将对象转换为JSON字符串

<?php
/** You can also use Arrays (Ex. $myArray = array(...)) */
$myObject = new StdClass();

$myObject->newKey = "newValue";
$myObject->otherKey = "otherValue";

$myObject->nestedArrays = array(
    'array1' => array(
        'key1' => 'value1',
        'key2' => 'value2', 
        /** ... OTHER KEY-VALUE ... */
        'keyN' => 'vakyeN'
    ),

    'array2' => array(
        'key1' => 'value1',
        'key2' => 'value2', 
        /** ... OTHER KEY-VALUE ... */
        'keyN' => 'vakyeN'
    )
);

/** ... OTHER CODE ... */

$myJSONString = json_encode($myObject);

print_r($myJSONString);

/** OUTPUT
  * {
  *     "newKey":"newValue",
  *     "otherKey":"otherValue",
  *     "nestedArrays":{
  *         "array1":{
  *             "key1":"value1",
  *             "key2":"value2",
  *             "keyN":"vakyeN"
  *         },
  *         "array2":{
  *             "key1":"value1",
  *             "key2":"value2",
  *             "keyN":"vakyeN"
  *         }
  *     }
  * }
  */

?>

<?php

$myObject = json_decode($myJSONString);

?>

代码： 输出：

---

首先显示您的代码。我们不是代码生成器。这是你最好的新朋友第1步：做一系列研究。第二步：试试看。第三步：如果你在某些特定的问题上遇到了困难，而你却无法找到在线解决方案，请回来告诉我们你尝试了什么，遇到了什么困难，预期的输出和实际的输出，我们可以从中帮助你。

$obj = new stdClass();
$obj->cluster="testcluster";
$obj->instance="i-03f8f8c9e7febab21";
$obj->instype="r4.8xlarge";
$obj->AZ="us-east-1e",
$obj->env="test",
$obj->cpus="32";
$obj->memory="25G";
$obj->kernelversion="4.4.0-96-generic";
$obj->info="cpu usage stats";
$obj->unit="percent";
$obj->cpustats = new stdClass();
$obj->cpustats->usr = array(1874,1857,1884,1869,1909,1912,1901,1880,1883); 
$obj->cpustats->sys = array(1874,1857,1884,1869,1909,1912,1901,1880,1883); 
$obj->cpustats->idle = array(1874,1857,1884,1869,1909,1912,1901,1880,1883); 
$obj->cpustats->softirq = array(1874,1857,1884,1869,1909,1912,1901,1880,1883); 
$obj->cpustats->intr = array (1874,1857,1884,1869,1909,1912,1901,1880,1883); 
$obj->cpustats->steal = array (1874,1857,1884,1869,1909,1912,1901,1880,1883); 

var_dump(json_encode($obj));

string(555) "{
"cluster":"testcluster",
"instance":"i-03f8f8c9e7febab21",
"instype":"r4.8xlarge",
"AZ":"us-east1e",
"env":"test",
"cpus":"32",
"memory":"25G",
"kernelversion":"4.4.0-96-generic",
"info":"cpu usage stats",
"unit":"percent",
"cpustats":{
"usr":[1874,1857,1884,1869,1909,1912,1901,1880,1883],
"sys":[1874,1857,1884,1869,1909,1912,1901,1880,1883],
"idle":[1874,1857,1884,1869,1909,1912,1901,1880,1883],
"softirq":[1874,1857,1884,1869,1909,1912,1901,1880,1883],
"intr":[1874,1857,1884,1869,1909,1912,1901,1880,1883],
"steal":[1874,1857,1884,1869,1909,1912,1901,1880,1883]
}"